Question

在/ project / users / 1 / stories / 1 /

处的NoReverseMatch

找不到带有参数'（''，）'的'user'的反向。尝试了1个模式：['项目/用户/（？P [0-9] +）/ $']

有人知道为什么当我按“ python manage.py runserver”时为什么会遇到此错误吗？它曾经可以正常工作，现在却不能。我已经看到问题可能出在user_id或user.id，但是我看不到它！这是我的代码：

project / views.py

def story(request, user_id, story_id):

if story_id is not None:
    story = get_object_or_404(Story, pk=story_id)
else:
    story = Story()
    story.user_id = user_id

if request.method == 'POST':
    story.title = request.POST['title']
    story.story = request.POST['story']
    story.date = timezone.now()
    story.save()
    return HttpResponseRedirect(reverse('project:story', args=(user_id,)))
else:
    context = {
        'user_id': user_id,
        'story_id': story_id,
        'title': story.title,
        'story': story.story,
        'likes': story.likes,
        'comments': story.comments
    }
return render(request, 'project/story.html', context)

project / urls.py

urlpatterns = [
path('', views.index, name='index'),
path('register/<int:user_id>/', views.register, name='register'),
path('login/<int:user_id>/', views.login, name='login'),
path('users/<int:user_id>/', views.user, name='user'),
path('users/<int:user_id>/stories/<int:story_id>/', views.story, name='story'),
]

project / templates / project / story.html

{% extends "project/base.html" %}

{% block content %}

{% if story_id %}
    <div class="post-preview">
        <h2 class="post-title"> {{ story.title }}</h2>
        <p class="post-subtitle">
            {{ story.story }}
        </p>
        <p class="post-meta">Posted by
            <a href="{% url 'project:user' story.author.id %}">{{ story.author.username }}</a>
            on {{ story.date }}
            <i class="fas fa-thumbs-up"> {{ story.likes }}</i>
            <i class="fas fa-comment"> {{ story.comments }}</i>
        </p>
    </div>
    <div class="post-preview">
        <h2> Comments </h2>
        {% for com in latest_comments %}
            <div class="post-preview">
                <p class="post-subtitle"> {{ comment.com }}</p>
            </div>
        {% endfor %}
    </div>
    <div class="post-preview">
        <form action="{% url 'project:story' user.id story.id %}" method="post">
            {% csrf_token %}
            <div class="form-group">
                <label for="text">Comment</label>
                <textarea id="text" name="text"
                          class="form-control" placeholder="Comment" rows="4">{{ comment.com }}
                </textarea>
            </div>
            <button type="submit" class="btn btn-primary">Submit</button>
        </form>
    </div>
{% else %}
    {% if request.story.author.id == user.id %}
        <form action="{% url 'project:story' user.id story.id %}" method="post">
            {% csrf_token %}
            <div class="form-group">
                <label for="title">Title</label>
                <input type="text" id="title" name="title"
                       class="form-control" placeholder="Title" value="{{ story.title }}"/>
            </div>
            <div class="form-group">
                <label for="text">Story</label>
                <textarea id="text" name="text"
                          class="form-control" placeholder="Story" rows="10">{{ story.story }}
                </textarea>
            </div>
            <button type="submit" class="btn btn-primary">Submit</button>
        </form>
    {% endif %}
{% endif %}
{% endblock %}

Answer 1

在您的context中，我们看到：

context = {
    'user_id': user_id,
    'story_id': story_id,
    'title': story.title,
    'story': story.story,
    'likes': story.likes,
    'comments': story.comments
}

因此story变量不不包含Story对象，它包含其story属性（可能基于视图的其余部分， str）。

现在在模板中编写：

{% url 'project:user' story.author.id %}

，但是由于story是str，因此它没有.author属性，因此它将被评估为string_if_invalid，除非您另外指定，否则空字符串''。

因此，您需要将上下文中的故事本身传递给：

context = {
    'user_id': user_id,
    'story_id': story_id,
    'title': story.title,
    'story': story,
    'likes': story.likes,
    'comments': story.comments
}

找不到带有参数“（”，）”的“用户”。尝试了1个模式：['项目/用户/（？P <用户ID> [0-9] +）/ $']

1 个答案: